GB2157298B - Solid phase deformation process - Google Patents

Solid phase deformation process

Info

Publication number
GB2157298B
GB2157298B GB08509237A GB8509237A GB2157298B GB 2157298 B GB2157298 B GB 2157298B GB 08509237 A GB08509237 A GB 08509237A GB 8509237 A GB8509237 A GB 8509237A GB 2157298 B GB2157298 B GB 2157298B
Authority
GB
United Kingdom
Prior art keywords
solid phase
die
workpiece
deformation process
phase deformation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB08509237A
Other versions
GB8509237D0 (en
GB2157298A (en
Inventor
Ian Macmillan Ward
Brian Parsons
Ja Faar Bin Sahari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Publication of GB8509237D0 publication Critical patent/GB8509237D0/en
Publication of GB2157298A publication Critical patent/GB2157298A/en
Application granted granted Critical
Publication of GB2157298B publication Critical patent/GB2157298B/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/30Drawing through a die
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05Filamentary, e.g. strands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06Rod-shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/78Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865Heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/475Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00Use of polyalkenes or derivatives thereof as moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene

Abstract

A process for the deformation of a workpiece comprising an orientable, thermoplastic polymer by passage in the solid phase through a die having both an entry side and an exit side, which process comprises providing the workpiece comprising the orientable, thermoplastic polymer which is initially present, at least in part, in an extended chain crystalline morphology at the entry side of the die; causing the workpiece to deform in the solid phase through the die; and collecting the deformed workpiece from the exit side of the die.
GB08509237A 1984-04-13 1985-04-11 Solid phase deformation process Expired GB2157298B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8409656 1984-04-13

Publications (3)

Publication Number Publication Date
GB8509237D0 GB8509237D0 (en) 1985-05-15
GB2157298A GB2157298A (en) 1985-10-23
GB2157298B true GB2157298B (en) 1987-11-18

Family

ID=10559627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08509237A Expired GB2157298B (en) 1984-04-13 1985-04-11 Solid phase deformation process

Country Status (6)

Country Link
US (1) US4938913A (en)
EP (1) EP0161802B1 (en)
JP (1) JPH0659680B2 (en)
AT (1) ATE54094T1 (en)
DE (1) DE3578399D1 (en)
GB (1) GB2157298B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6174934B1 (en) 1993-06-01 2001-01-16 Stryker Technologies Corporation Non-oxidizing polymeric medical implant
US6849224B2 (en) 1999-04-21 2005-02-01 Howmedica Osteonics Corp. Methods for preparing selectively cross-linked polyethylene orthopedic devices
US7858671B2 (en) 1996-02-13 2010-12-28 The General Hospital Corporation Radiation and melt treated ultra high molecular weight polyethylene prosthetic devices
US8003709B2 (en) 1996-07-09 2011-08-23 Orthopaedic Hospital Crosslinking of polyethylene for low wear using radiation and thermal treatments
US8563623B2 (en) 1996-02-13 2013-10-22 The General Hospital Corporation Radiation melt treated ultra high molecular weight polyethylene prosthetic devices

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63126724A (en) * 1986-11-17 1988-05-30 Nippon Valqua Ind Ltd Manufacutring of fluorine resin rod
GB8628730D0 (en) * 1986-12-02 1987-01-07 Mackley M R Polymer forming process
GB2207436B (en) * 1987-07-24 1991-07-24 Nat Research And Dev Corp The Solid phase deformation process
GB8916231D0 (en) * 1989-07-14 1989-08-31 Evans Kenneth E Polymeric materials
US5169587A (en) * 1990-06-15 1992-12-08 Symplastics Limited Process for extruding large oriented polymer shapes
US5204045A (en) * 1990-06-15 1993-04-20 Symplastics Limited Process for extruding polymer shapes with smooth, unbroken surface
GB9524744D0 (en) * 1995-12-04 1996-02-07 Smith & Nephew Composites
JPH10323890A (en) * 1997-05-23 1998-12-08 Nippon Oil Co Ltd Manufacture of fluororesin drawing molded product
US7807247B1 (en) 1999-10-29 2010-10-05 Bromley Robert L Flexlock with headed pintle and conical buttressing
JP4807718B2 (en) 1999-10-29 2011-11-02 サムソナイト アイピー ホールディングス エス.エー.アール.エル. Method for producing a non-fiber structure
GB0128405D0 (en) * 2001-11-27 2002-01-16 Btg Int Ltd Process for fabricating polyolefin sheet
CA2429930C (en) 2002-06-06 2008-10-14 Howmedica Osteonics Corp. Sequentially cross-linked polyethylene
EP3184275B1 (en) 2003-05-22 2020-04-29 Canco Hungary Investment Ltd. Polymeric articles
US8262976B2 (en) * 2004-10-07 2012-09-11 Biomet Manufacturing Corp. Solid state deformation processing of crosslinked high molecular weight polymeric materials
US7462318B2 (en) * 2004-10-07 2008-12-09 Biomet Manufacturing Corp. Crosslinked polymeric material with enhanced strength and process for manufacturing
US7344672B2 (en) * 2004-10-07 2008-03-18 Biomet Manufacturing Corp. Solid state deformation processing of crosslinked high molecular weight polymeric materials
KR100876457B1 (en) * 2005-07-29 2008-12-29 주식회사 엘지화학 Solid state extrusion orientation method using ultrasonic wave and apparatus for same
DE602007006055D1 (en) * 2006-11-10 2010-06-02 Dow Global Technologies Inc STRUCTURES IN THE SOLID-STATE CONDITION OF A FILLED POLYMER COMPOSITION UP TO A STABLE HOLLOW SIZE AND DENSITY
US8641959B2 (en) 2007-07-27 2014-02-04 Biomet Manufacturing, Llc Antioxidant doping of crosslinked polymers to form non-eluting bearing components
WO2009079206A1 (en) * 2007-12-17 2009-06-25 Dow Global Technologies Inc. Shaping die and its use in a solid state drawing process
ES2625887T3 (en) 2009-03-09 2017-07-20 Eovations, Llc Cavitated oriented polyethylene polymer compounds
US9586370B2 (en) 2013-08-15 2017-03-07 Biomet Manufacturing, Llc Method for making ultra high molecular weight polyethylene

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB656300A (en) * 1948-10-01 1951-08-22 British Mechanical Prod Ltd Production of rods, tubes and the like from polytetrafluorethylene
GB1052090A (en) * 1963-08-23
GB1109871A (en) * 1964-08-10 1968-04-18 Atomic Energy Authority Uk Improvements in or relating to extrusion apparatus
US3451241A (en) * 1966-09-01 1969-06-24 Western Electric Co Methods of hydrostatic extrusion
US3507941A (en) * 1967-07-12 1970-04-21 Us Navy Process to increase strength of artificial organic materials
GB1220182A (en) * 1968-02-27 1971-01-20 Ici Ltd Reinforced thermoplastic composite materials
US3714320A (en) * 1968-09-30 1973-01-30 Shell Oil Co Cold extrusion process
GB1311885A (en) * 1969-07-01 1973-03-28 Ici Ltd Deformation of polymeric materials
JPS5017106B1 (en) * 1970-12-16 1975-06-18
GB1423138A (en) * 1972-03-04 1976-01-28 Dunlop Ltd Method of making articles
US3944536A (en) * 1973-06-18 1976-03-16 E. I. Du Pont De Nemours & Company Exceptionally rigid and tough ultrahigh molecular weight linear polyethylene
GB1480479A (en) * 1973-06-28 1977-07-20 Nat Res Dev Process for the production of polymer materials
WO1980002671A1 (en) * 1979-06-06 1980-12-11 Nat Res Dev Polymer processing
US4360898A (en) * 1980-06-30 1982-11-23 International Business Machines Corporation Programmable logic array system incorporating Josephson devices
SU1033591A1 (en) * 1981-04-06 1983-08-07 Ордена Ленина Институт Химической Физики Ан Ссср Method for making polycomponent synthetic fibers

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6174934B1 (en) 1993-06-01 2001-01-16 Stryker Technologies Corporation Non-oxidizing polymeric medical implant
US7858671B2 (en) 1996-02-13 2010-12-28 The General Hospital Corporation Radiation and melt treated ultra high molecular weight polyethylene prosthetic devices
US8263676B2 (en) 1996-02-13 2012-09-11 The General Hospital Corporation Radiation and melt treated ultra high molecular weight polyethylene prosthetic devices
US8563623B2 (en) 1996-02-13 2013-10-22 The General Hospital Corporation Radiation melt treated ultra high molecular weight polyethylene prosthetic devices
US8865788B2 (en) 1996-02-13 2014-10-21 The General Hospital Corporation Radiation and melt treated ultra high molecular weight polyethylene prosthetic devices
US8003709B2 (en) 1996-07-09 2011-08-23 Orthopaedic Hospital Crosslinking of polyethylene for low wear using radiation and thermal treatments
US8008365B2 (en) 1996-07-09 2011-08-30 Orthopaedic Hospital Crosslinking of polyethylene for low wear using radiation and thermal treatments
US6849224B2 (en) 1999-04-21 2005-02-01 Howmedica Osteonics Corp. Methods for preparing selectively cross-linked polyethylene orthopedic devices

Also Published As

Publication number Publication date
EP0161802A2 (en) 1985-11-21
JPS60236718A (en) 1985-11-25
DE3578399D1 (en) 1990-08-02
EP0161802B1 (en) 1990-06-27
JPH0659680B2 (en) 1994-08-10
ATE54094T1 (en) 1990-07-15
EP0161802A3 (en) 1986-01-08
GB8509237D0 (en) 1985-05-15
US4938913A (en) 1990-07-03
GB2157298A (en) 1985-10-23

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20050410